Adds the foundation that the unified save flow refactor builds on. No
behavior change at this commit — empty default template means every save
site still produces {id}{ext} like v0.2.3.
- core/db.py: library_meta.filename column with non-breaking migration
for legacy databases. Index on filename. New
get_library_post_id_by_filename() lookup. filename kwarg on
save_library_meta (defaults to "" for legacy callers).
library_filename_template added to _DEFAULTS.
- core/config.py: render_filename_template() with %id% %md5% %ext%
%rating% %score% %artist% %character% %copyright% %general% %meta%
%species% tokens. Sanitizes filesystem-reserved chars, collapses
whitespace, strips leading dots/.., caps the rendered stem at 200
characters, falls back to post id when sanitization yields empty.
- gui/settings.py: Library filename template input field next to the
Library directory row, with a help label listing tokens and noting
that Gelbooru/Moebooru can only resolve the basic ones.
pax
6075f31917